343477397 has 4 divisors (see below), whose sum is σ = 349108236. Its totient is φ = 337846560.

The previous prime is 343477391. The next prime is 343477403. The reversal of 343477397 is 793774343.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (343477391) and next prime (343477403).

It can be written as a sum of positive squares in 2 ways, for example, as 73170916 + 270306481 = 8554^2 + 16441^2 .

It is a cyclic number.

It is not a de Polignac number, because 343477397 - 2¹² = 343473301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343477391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2815328 + ... + 2815449.

It is an arithmetic number, because the mean of its divisors is an integer number (87277059).

Almost surely, 2^343477397 is an apocalyptic number.

It is an amenable number.

343477397 is a deficient number, since it is larger than the sum of its proper divisors (5630839).

343477397 is an equidigital number, since it uses as much as digits as its factorization.

343477397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5630838.

The product of its digits is 1333584, while the sum is 47.

The square root of 343477397 is about 18533.1432034612. The cubic root of 343477397 is about 700.3246093104.

The spelling of 343477397 in words is "three hundred forty-three million, four hundred seventy-seven thousand, three hundred ninety-seven".